ItemStand

動作順
/execute @a[score_flag_min=1,score_flag=1] ~ ~ ~ /scoreboard players set @e[r=5,type=ArmorStand,name=ItemStand] flag 0 {DisabledSlots:0}
/execute @a ~ ~ ~ /scoreboard players set @e[r=5,type=ArmorStand,name=ItemStand] flag 1 {Equipment:[{Count:1b},{},{},{},{}],DisabledSlots:0}
/kill @e[score_flag_min=0,score_flag=0,type=ArmorStand,name=ItemStand]
/execute @a[score_flag_min=1,score_flag=1] ~ ~ ~ /entitydata @e[r=5,type=ArmorStand,name=ItemStand] {DisabledSlots:31}
/execute @a[score_flag_min=0,score_flag=0] ~ ~ ~ /entitydata @e[r=5,type=ArmorStand,name=ItemStand] {DisabledSlots:0}
/execute @e[type=ArmorStand,name=ItemStand] ~ ~ ~ /scoreboard players set @a[r=5] flag 0
/execute @e[type=ArmorStand,name=ItemStand] ~ ~ ~ /scoreboard players set @a[r=5] flag 1 {SelectedItem:{}}

アイテム
/summon ArmorStand ~-.5 ~ ~ {Equipment:[{id:diamond_sword,Count:1},{},{},{},{}],NoGravity:1,ShowArms:1,Invulnerable:1,Pose:{RightArm:[90f,90f,0f]},Rotation:[0f,0f],CustomName:test,NoGravity:1,Invisible:1,DisabledSlots:0,Invulnerable:1,CustomName:ItemStand}